#VU11273 Buffer overflow in OpenJPEG - CVE-2018-7648

Vulnerability identifier: #VU11273

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-7648

CWE-ID: CWE-120

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
OpenJPEG
Universal components / Libraries / Libraries used by multiple products

Vendor: openjpeg.org

Description
The vulnerability allows a local attacker to cause DoS condition on the target system.

The weakness exists in the mj2/opj_mj2_extract.c source code file due to insufficient length checks of output prefixes. A local attacker can send a specially crafted prefix, which contains 50 or more characters via the command line, trigger buffer overflow condition and cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

OpenJPEG: 2.3.0

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External links
https://github.com/uclouvain/openjpeg/issues/1088

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.